Bark chipping hack for turpentining trees



Jah. 20, 1948. I A. G. SNOW, JR., ET AL 2,434,869

BARK CHIPPING HACK FOR TURPENTINING TREES Filed Feb. 23, 1945 I INVENTORS AG'. SNOW JR.

' H.R.LANIER.

Patented Jan. 20, 1948 Albert G. Snow, Jr., Lake City, and Hubert It. Lanier, Olustee, Fla., assignors to the United States of America, as represented by the Secretary of Agriculture Application February 23, 1945, Serial No. 579,477

1 Claim.

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) This application is made under the act of March 3, 1883, as amended by the act of April 30, 1928, and the invention herein described, if patented, may be manufactured and used by orfor the Government of the United States of America for governmental purposes Without the payment to us of any royalty thereon.

This invention relates to a turpentine hack for chipping bark from pine trees in the process of obtaining oleoresin, in particular where chemical stimulants are employed, and has among its objects the provision of a turpentine hack best suited to remove the bark only down to but not including any wood; that will make a cut through the bark to the wood in such a manner that the resulting cut surface is perpendicular to the axis of the tree, resulting in a minimum of thin living bark tissue that tends to die with chemical stimulation, thereby clogging up some of the horizontal duct system and inhibiting the flow of oleoresin; that will remove all the dead and living bark from a definite area above the face without leaving any residual tissue to inhibit the action of applied chemicals and/or the flow of oleoresin; that will'result in specified limits in width of bark being removed in any one cut; that will not become clogged with bark when used on trees with thick bark, particularly in virgin operations; that, when used with an improved acid treatment of faces, in contrast to the conventional method of acid treatment of faces in which wood is removed, will result in greater yields of oleoresin; and that will out only the bark and, when used in a conventional manner, can be operated with an expenditure of less energy.

In general, the hack is of the type provided with a longitudinally extending handle having a hack head attached to one end of the handle with sharpened edges of the head positioned to one side of the handle and directed forwardly toward the free end thereof so that in using the hack an operator grasps the handle and draws the hack head longitudinally toward himself with the sharpened forward edges engaging the bark, thus to chip it from the tree, leaving a cut surface or face on the tree. Such hacks are generally provided with a weight attached to the free end of the handle.

For a detail description of the invention; reference is made to the accompanying drawing, in which Figure 1 is a three-dimensional view of the hack, partially showing the handle and with parts of the hack head cut away more clearly to represent the construction;

Figure 2 is a side view illustrating a variation of the hack head; and

Figure 3 is a three-dimensional view illustrating another variation.

The hack is provided with a longitudinally extending handle I!) of conventional type, to one end of which the hack head H is attached by known means.

The special features of the invention relate to the construction of the hack head. This head is provided with two generally similar, facing, spaced, flat side members I2 and I3, member l2 being provided with a sharpened, straight, laterally extending edge l4, and member 13 with a similar edge [5. Each side member is also provided with a straight end, this end making an acute angle with the sharpened edge. Angle a as shown in Figure 1 indicates this acute angle in reference to the side 13. The hack head also comprises a flat end member I6 having a sharpened, straight, forward edge I1 and two straight, longitudinally extending ends making obtuse angles, one of which is shown at b, with its straight edge, end member l6 being joined to the side members l2 and I3 as by an integral connection between the straight, longitudinally extending ends of the flat end member and the mating straight ends of the side members, as illustrated by the corners l8 and 19, respectively. The junctions between the end member l6 and side members l2 and I3 are such that the sharpened edges l4, l1 and I5 are contiguous and the angles between edge l4 and edge l1 and between edge l5 and edge [1, one of which is shown at c, are right angles.

In using the hack, the sharpened edge I! is applied to the tree and severs the bark at the cambium. The sharpened edges I4 and I5 sever the bark down to the wood with a cut perpendicular to the axis of the tree.

The angles, one of which is shown at a,.being acute, result in a slicing action when the hack head is drawn across the bark. This reduces the draw force necessary to make the cut. The angles, one of which is shown at b, being obtuse, result in rearward divergence of the side members l2 and I3. This reduces the tendency of the bark to jam between the side members during the cutting The angles, one of which is shown at 0, being right angles, result in symmetry so that an incision may be made with the entire edge I! in contact with the wood, the bark incision made by edges l4 and I5 being perpendicular to the axis of the tree.

The variation shown in Figure 3 is similar to The variation shown in Figure 3 is similar: to"- j" that of Figure 1, except that a notch as shown at 20 is cut out of the end member, thus further to reduce the tendency of the barktojambetwe'en" the side members during the cutting. operation;

Having thus described the invention,'what' is claimed is:

A hack having a longitudinally'extending handie and a hack head for chipping bark from pine trees, said hack head comprising two generally similar, facing, spaced, fiat. side members each provided with a sharpened, straight, laterallyexetending edge and a straight end making an acute angle with the sharpened edge, and afiat end member having a sharpened, straight,. forward edge and two straight, longitudinally extending ends, the sharpened edge of said fiat end mem- 4 her being joined along its two longitudinally extending ends to the straight ends of the side members with the sharpened edge: of each side member and thesharpenededge of the end member contiguous and at right angles to each other, said hack head being attached to one end of the handlein such manner that the sharpened edges 7 are positioned to one side of the handle and Y "Number.

ber making obtuse angles with itstwo straight,

longitudinally extending ends, said flat end memdirected toward the free end thereof.

ALBERT G. SNOW, JR. HUBERT R. LANIER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date 501,858 Aldrich July 18, 1893 875,391 Tinsley Dec. 31,190? 943,050 Stone 'Dec. 14-, 1909 1 185966 Cline May 30, 1916 15261589 Bristle Apr. 2, 1918 1,818,964 Smith Aug, 11,1931 

